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3.4 , 6.3 , 9.2 , 12.1 , 15 , ?

Add 2.9 in previous term to find next term..

Which number is the odd one out, 159, 248, 963, 357, 951, 852 ?

In the rest there is the same difference between each digit! eg 8 (-3) 5 (-3) 2.

Which number is the odd one out, 396, 462, 572, 427, 671, 264

In each number except 427, the middle digit is the sum of other two..

B , W , F , P , M , E , ?

Two parallel series one with skipping 3 , 6,... alphabets and other with skipping 6 , 12,... alphabets..

100 , 97 , 91 , 82 , ?

-3 , -6 , -9 , -12!(Multiples of 3 are subtracted).

O , R , M , T , K , V , I , ?

Two parallel series one with skipping one alphabet in reverse order and other with skipping one alphabet in forward order..

B , D , F , H , J , L , ?

Skip one alphabet..

1 , 2 , 3 , 5 , 7 , 10 , 13 , 17 , 21 , ? , ?

+1, +1, +2, +2, +3, +3, +4, +4, +5, +5.

2 , -1 , 2 , -1 , 2 , ?

Subtract and add 3 alternatively..

4 , 7 , 15 , 29 , 59 , 117 , ?

Multiply with 2 and subtract and add 1 alternatively..

5 , 5 , 3 , -1 , -7 , ?

Subtract 0 ,2 , 4,....

Which number is the odd one out, 6, 9, 15, 21, 24, 28, 30

Each of the numbers except 28, is a multiple of 3..

Which is the odd number out, 9421 , 7532 , 9854 , 8612 , 6531 , 8541 ?

All the other numbers have their digits in descending order..

20 , 30 , 45 , ?

Multiply previous term with 1.5 to find next term..

Which number is the odd one out, 8, 27, 64, 100, 125, 216, 343

All others are perfect cube of any number but 100 is not the perfect cube of any number..

2 , 5.75 , ? , 13.25 , 17 , 20.75

Add 3.75 each time..

Which number is the odd one out, 2, 5, 10, 17, 26, 37, 50, 64

(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1! !But, 64 is out of pattern..

100 , 1 , 97.5 , 3.5 , 92.5 , 8.5 , 85 , 16 , ? , ?

There are two interwoven sequences.! ! subtract 2.5, 5, 7.5 starting at 100 and Add 2.5, 5, 7.5 starting at 1..

AZ , DX , HU , MQ , ?

skip 2 , 3 , 4,... alphabets to find first character and subtract 1 , 2 , 3,... alphabets to find second character..

0 , 3 , 8 , 15 , ?

Add 3 , 5 , 7,....

F , G , I , L , P , ?

Skip alphabets 0,1,2,....

Which number is the odd one out, 331, 482, 551, 263, 383, 362, 284

In each number except 383, the product of first and third digits is the middle one..

12 , 14 , 34 , 36 , 56 , 58 , 78 , ?

Add 2 and 20 alternatively..

2 , 14 , 32 , 56 , 86 , ?

Add 12 , 18 , 24 , 30 , 36,....

Which number is the odd one out, 10, 25, 45, 54, 60, 75, 80

Each of the numbers except 54 is multiple of 5..

6 , 10 , 18 , 34 , 66 , ?

Add 4 , 8 , 16 , 32,....

Which number is the odd one out, 3, 5, 7, 12, 17, 19

Each of the numbers is a prime number except 12..

X , U , Q , N , J , G , ?

Skip 2 and 3 alphabets alternatively in reverse..

E , H , K , N , Q , T , ?

Skip two alphabets..

6 , 8 , 10 , 14 , 18 , 26 , 34 , 50 , 66 , ?

Add 2, 4, 4, 8, 8, 16, 16,....

O , P , R , U , ?

Skip 0 , 1 , 2 , 3,... alphabets..

63 , 35 , 15 , 3 , ?

8^2 - 1 = 63!and!6^2 - 1 = 35!and!4^2 - 1 = 15!and!2^2 - 1 = 3!in the same way!0^2 - 1 = -1.

1/32 , 1/16 , 1/4 , 1/2 , 2 , 4 , ?

Multiply with 2 and 4 alternatively.

3 , 10 , 33 , 104 , ?

Multiply with 3 and add 1, 3, 5, 7,....

XYZ , WVV , VSR , UPN , ?

Subtract 1 from first 3 from second and 4 from third character..

Which number is the odd one out, 835, 734, 642, 751, 853, 981, 532

In each number except 751, the difference of third and first digit is the middle one..

108 , 189 , 216 , 225 , ?

Add 81 , 27 , 9 , 3,....

1/3 , 3/7 , 6/13 , 10/21 , 15/31 , ?

Add 2 , 3 , 4,... in numerator and add 4 , 6 , 8,... in denominator..

492 , 366 , 189 , 810 , ?

8 * 1 = 8, 8 + 0 = 8.

14 , 16 , 28 , 32 , 42 , 48 , 56 , 64 , ? , ?

There are two interwoven sequences, add 14 starting at 14 and add 16 starting at 16..

F , O , T , W , ?

Skip 8 , 4 , 2 , 1 alphabets..

Which number is the odd one out, 1, 4, 9, 16, 20, 36, 49

All other numbers are perfect square of numbers but 20 is not perfect square of any number..

180 , 140 , 179 , 138 , 177 , 134 , ?

Two parallel series, one with subtracting 1,2,3,... and other with subtracting 2,4,6,....

C , F , J , O , ?

Skip 2 , 3 , 4,... alphabets..

A , E , X , H , U , ?

Two parallel series, one with skipping two alphabets in reverse order and other with skipping two alphabets in forward order.

17 , 34 , 51 , 68 , ?

Add 17 each time..

C , G , L , R , ?

Skip 3 , 4 , 5,... alphabets..

17 , 20 , 19 , 22 , 21 , 24 , 23 , ?

Add 3 and subtract 1 alternatively..

64521 is to 41256 as 38297 is to..

A B C D E!6 4 5 2 1! !B E D C A!4 1 2 5 6! !A B C D E!3 8 2 9 7! !B E D C A!8 7 9 2 3.

1.5 , 3 , 5.5 , 9 , 13.5 , ?

Add 1.5, 2.5, 3.5, 4.5, 5.5.

A , Y , W , U , S , Q , ?

Skip one alphabet in reverse order..

2 , 6 , 15 , 34 , 73 , ?

Multiply with 2 and add 2 , 3 , 4 , 5 , 6,....

1 , 2.65 , 4.3 , 5.95 , 7.6 , ?

1.65 is adding in each term..

B , L , R , T , ?

Skip alphabets 10 , 6 , 2 , -2 , -6,....

What four-digit number should replace the question mark? 4342 (3176) 1726, 7995 (7516) 2162, 8418 (????) 1725

Delete the digits outside the brackets that appear twice, and insert the remaining digits in the brackets in the same order that they appear outside the brackets!8418 (4725) 1725.

Which number is the odd one out, 10, 14, 16, 18, 21, 24, 26

All numbers are even except 21..

Which number is the odd one out, 41, 43, 47, 53, 61, 71, 73, 81

Each of the numbers except 81 is a prime number..

1 , 2 , 4 , 8 , ?

Add 1 first and then add double of previously added number..

0 , 1 , 4 , 9 , 16 , 25 , 36 , 49 , ?

Add 1, 3, 5, 7, etc..

1 , 1 , 2.5 , 3.5 , 4 , 6 , 5.5 , 8.5 , ? , ?

There are two interwoven sequences.! !+1.5 starting at the first 1, and +2.5 starting at the second 1..

F , I , M , P , T , W , ?

Skip 2 and 3 alphabets alternatively..

0 , 7 , 15 , 24 , 34 , ?

add 7 , 8 , 9 , 10 , 11,....

Which number is the odd one out, 1, 4, 9, 16, 23, 25, 36

Each of the numbers except 23, is perfect square..

0.67 , 0.69 , 0.48 , 0.88 , 0.29 , 1.07 , ?

There are two series!Subtract 0.19 from the series starting with 0.67 and add 0.19 from the series starting with 0.69..

156 , 76 , 36 , 16 , ?

Subtract 4 from previous term and then divide it with 2 to find next term..

9 , 11 , 17 , 35 , ?

Add 2 , 6 , 18 , 54,...!here!6 = 2*3!18 = 6*3!and!54 = 18*3.

3 , 7 , 2 , 47 , ?

3^2 - 7 = 2!7^2 - 2 = 47!In the same way!2^2 - 47 = -43.

2 , 7 , 5 , 5 , 8 , 3 , 11 , ?

Two parallel series one with adding 3 and other with subtracting 2..

Find the odd man out, 3, 5, 11, 14, 17, 21

Each of the numbers except 14 is an odd number.! !The number '14' is the only EVEN number..

N , N , P , L , S , I , W , ?

Two parallel series. One with skipping 1 , 2 , 3,... alphabets in forward order and other with skipping same alphabets in reverse order..

5 , 2.5 , 1.25 , 0.625 , ?

Divide previous term with 2 to find next term..

M , F , N , G , R , I , S , L , W , P , ?

Two parallel series one with skipping 0 and 3 alphabets alternatively and other with skipping 0 , 1 , 2,....

5 , 26 , 131 , 656 , ?

Multiply by 5 and add 1 each time..

1 , 4 , 2 , 5 , 3 , 6 , 4 , ?

There are two interwoven sequences.! !First starts with 1 and second with 4!Add 1 in both series.

3/81 , 4/256 , 5/625 , ?

Add 1 in numerator and in denominator!(3*3)^2 = 81!(4*4)^2 = 256!(5*5)^2 = 625!in the same way!(6*6)^2 = 1296.

0 , 100 , 6 , 94 , 12 , 88 , 18 , 82 , ? , ?

There are two sequences interwoven.! !Add 6 starting at 0 and deduct 6 starting at 100..

7/2 , 4 , 7 , 14 , ?

Multiply previous 2 numbers and divide by 2..

36 , 72 , ? , 144 , 180 , 216 , 252

Add 36 each time..

B , D , G , K , P , ?

Skip 1 , 2 , 3,... alphabets..

Which two letters come next in the sequence A , D , I , P , Y , CF , DI , FD , ?

take the numerical position of each letter in the alphabet to reveal the sequence of consecutive square numbers 1, 4, 9, 16, 25, 36, 49, 64, 81.

Which number is the odd one out, 16, 25, 36, 72, 144, 196, 225

Each of the numbers except 72 is a perfect square..

6 , H , 9 , K , 11 , M , 14 , P , 16 , R , 19 , U , 21 , ?

Add 3 and 2 alternatively in number series and skip 2 and 1 alphabets alternatively.

78214 and 292 , 38421 and 459 , 69517 and ?

78 + 214 = 292!38 + 421 = 459! !So, 69 + 517 = 586.

100 , 98 , 94 , 88 , 80 , 70 , ?

Deduct 2, 4, 6, 8, 10, 12.

71 , 25 , 83 , 37 , 95 , 49 , ?

Two parallel series both with adding 12..

7 , 10 , 25 , 94 , 463 , ?

7*2 - 4 = 10!and!10*3 - 5 = 25!and!25*4 - 6 = 94!and!94*5 - 7 = 463!In the same way!463*6 - 8 = 2770.

9 , 18 , 27 , ? , 45 , ? , 63

Add 9 each time..

7964325 is to 6975234 , 5822139 is to 2859312 as 7469851 is to ?

Reverse the first three digits then reverse the last four digits..

2 , 6 , 18 , 54 , 162 , ?

Multiply previous term with 2 to find next term..

2 , 5 , 10 , 17 , 26 , ?

add 3 , 5 , 7 , 9 , 11,....

25 , 50 , 27 , 46 , 31 , 38 , 39 , ?

There are two interwoven sequences.!Add 2, 4 and 8 from the sequence starting with 25!and subtract 4, 8 and 16 from the sequence starting with 50.

100 , 96.75 , 93.5 , 90.25 , 87 , ?

Deduct 3.25 each time..

B , C , E , G , K , ?

Prime numbers 2, 3 , 5 , 7 , 11 , 13,....

BZ , EW , HT , KQ , ?

Skip 2 alphabets in forward order to find first alphabet and skip 2 alphabets in reverse order to find 2nd alphabet..

7 , 13 , 24 , 45 , 86 , ?

Multiply previous term with 2 and subtract 1 , 2 , 3,... to find next term..

87 , 102 , 119 , 138 , 159 , ?

Adding 15 , 17 , 19,....

1 , 4 , 9 , 61 , 52 , ?

Square 1 , 2 , 3,... and change the sequence of digits..

3 , 6 , 9 , 12 , 15 , ?

Add 3 in previous term to find next term..

-6 , 9 , -27/2 , 81/4 , -243/8 , ?

Multiply previous term with -3/2 to find next term..

3925 and 277 , 4697 and 2416 , 6257 and ?

3 * 9 = 27! 5 + 2 = 7!(277).! !4 * 6 = 24!and 9 + 7 = 16!(2416)! !Similarly,!6 * 2 = 12!and 5 + 7 = 12!(1212).

T , Q , M , H , ?

Skip 2 , 3 , 4,... alphabets in reverse order..

8 , 16 , 32 , 64 , 128 , ?

Multiply previous term with 2 to find next term..

1 , 1 , 2 , ? , 24 , 120 , 720

Multiply by 1, 2, 3 and so on....

2 , 20 , 42 , 68 , 98 , ?

Add 18 , 22 , 26 , 30 , 34,....

759 , 675 , 335 , 165 , ?

Each number is formed by multiplying the number formed by the first two digits of the previous number by its third digit.! !So, 16 * 5 = 80.

C , F , K , R , ?

Skip 2 , 4 , 6 , 8,... alphabets.

100 , 50 , 200 , 25 , 400 , ?

There are two interwoven sequences.! ! Multiply 2 starting at 100 and devide by 2 starting at 50..

1000 , 971.4 , 942.8 , 914.2 , 885.6 , ?

Deduct 28.6 each time..

7 , 12 , 19 , 28 , ?

add 5 , 7 , 9 , 11,....

1 , 1 , 3 , 15 , 105 , ?

Multiply by 1, 3, 5, 7, 9.

110 , ? , 99 , 81 , 72 , 63 , 54 , 45

Deduct the sum of the digits of the previous number each time..

9 , 16 , 13 , 13 , 17 , 10 , 21 , 7 , ?

There are two interwoven sequences! !Add 4 starting with 9! !and subtract 3 starting with 16..

A , B , D , I , ?

Multiply position of previous alphabet with 3 and subtract 1 , 2 , 3,... respectively..

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